load field values logic moved to backend

packages/tools/src/driverBase.ts

@@ -1,5 +1,7 @@
+import _compact from 'lodash/compact'
 import { SqlDumper } from './SqlDumper';
 import { splitQuery } from 'dbgate-query-splitter';
+import { dumpSqlSelect } from 'dbgate-sqltree';
 
 const dialect = {
   limitSelect: true,
@@ -51,4 +53,56 @@ export const driverBase = {
     }
     return [];
   },
+  async loadFieldValues(pool, name, columnName, search) {
+    const dmp = this.createDumper();
+    const select = {
+      commandType: 'select',
+      distinct: true,
+      topRecords: 100,
+
+      from: {
+        name,
+      },
+      columns: [
+        {
+          exprType: 'column',
+          columnName,
+          alias: 'value',
+        },
+      ],
+      orderBy: [
+        {
+          exprType: 'column',
+          columnName,
+        },
+      ],
+    };
+
+    if (search) {
+      const tokens = _compact(search.split(' ').map(x => x.trim()));
+      if (tokens.length > 0) {
+        // @ts-ignore
+        select.where = {
+          conditionType: 'and',
+          conditions: tokens.map(token => ({
+            conditionType: 'like',
+            left: {
+              exprType: 'column',
+              columnName,
+            },
+            right: {
+              exprType: 'value',
+              value: `%${token}%`,
+            },
+          })),
+        };
+      }
+    }
+
+    // @ts-ignore
+    dumpSqlSelect(dmp, select);
+
+    const resp = await this.query(pool, dmp.s);
+    return resp.rows;
+  },
 };